Finding the Third Proportional to 78,499.13 and 170,373.38

Step by Step Solution

1. Step 1: Write the proportion equation
   78,499.13 : 170,373.38 = 170,373.38 : x
2. Step 2: Convert to fraction form
   78,499.13/170,373.38 = 170,373.38/x
3. Step 3: Cross multiply
   78,499.13x = 170,373.38 × 170,373.38
4. Step 4: Simplify right side
   78,499.13x = 29,027,086,908.89
5. Step 5: Solve for x
   x = 29,027,086,908.89/78,499.13
6. Step 6: Final answer
   x = 369,775.93